51955236 has 24 divisors (see below), whose sum is σ = 134699040. Its totient is φ = 17318376.

The previous prime is 51955231. The next prime is 51955283. The reversal of 51955236 is 63255915.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51955236.

It is not an unprimeable number, because it can be changed into a prime (51955231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240426 + ... + 240641.

It is an arithmetic number, because the mean of its divisors is an integer number (5612460).

Almost surely, 2^51955236 is an apocalyptic number.

It is an amenable number.

51955236 is an abundant number, since it is smaller than the sum of its proper divisors (82743804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51955236 is a wasteful number, since it uses less digits than its factorization.

51955236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481080 (or 481072 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 51955236 is about 7207.9980577134. The cubic root of 51955236 is about 373.1439810046.

It can be divided in two parts, 519 and 55236, that added together give a palindrome (55755).

The spelling of 51955236 in words is "fifty-one million, nine hundred fifty-five thousand, two hundred thirty-six".